Day: January 11, 2021

RS485 Troubleshooting

RPI Linux RS-485 with CH340B chip (Sometimes misses 7th byte, on specific reading) Ask QuestionAsked todayActive todayViewed 10 times-1 I have a problem with RS-485 communication. Sometimes reading misses 7th byte (so it misses start […]

Re: GPIO.input voltage levels vs edge detection Quote Fri Dec 14, 2018 4:15 amBrandon92 wrote: ↑Wed Dec 12, 2018 8:14 pmFor a project I used this LED and it was powered by 3.3V with a 650r resistor. […]


Dear partners,Due to the rapid development of SIMCom and the continuous expansion of its business, the original office location can’t meet the needs that future development of company. From January 1, 2021, […]